According to MassLive's Brian Robb, Horford's showing against the Cavaliers should be enough proof that he can continue playing beyond the current season. However, Horford will hit unrestricted free agency next summer, meaning the Celtics must move to sign him to an extension, assuming he's willing to push off retirement and continue playing.

The Celtics could have their first fully healthy roster of the season on Friday night when they face off against the Chicago Bulls in NBA Cup pool play. Luke Kornet was the only player listed on the team’s injury report Thursday with the Celtics upgrading him to probable for the matchup in Chicago.